Three’s company for most — but not all — rental houses in Fort Collins.

Depending on an area’s zoning, city code allows houses to have four, five and even more renters in a single-family home, even with a city regulation that prohibits more than three unrelated persons from living in a rental.

The prospect of having an “extra-occupancy rental” — formerly known as a boarding house — with up to five renters in their neighborhood has residents of Deines Court and the surrounding area ready to fight.